btrfs send/receive issues

Hi,

I want to do a backup of a btrfs subvolume from one disk to another disk, both with btrfs filesystems, using the btrfs send receive functionality. I do

cd /media/miguel/btrfs_backup/
mkdir backups
sudo btrfs send /mnt/@backup2 | sudo btrfs receive /media/miguel/btrfs_backup/backups/

and this works fine, the @backup2 subvolume is created at /media/miguel/btrfs_backup/backups/. Then I try to send a second snapshot taken after @backup2 :

sudo btrfs send -p /mnt/@backup2 /mnt/@backup3 | sudo btrfs receive /media/miguel/btrfs_backup/backups/

And I get:

At subvol /mnt/@backup3
At snapshot @backup3
ERROR: open backups/@backup2 failed. No such file or directory

But @backup2 is a subvolume in /media/miguel/btrfs_backup/backups/

I'm I doing something wrong ?

best,

Miguel Negrão
http://www.friendlyvirus.org/miguelnegrao

I'm not sure, I just did it and it worked fine for me. Could you file a bugzilla at bugzilla.kernel.org and make sure the component is set to btrfs? Also could you do the send to a file, and then receive from the file so we can see if its send or receive that's giving you the error and put that in the bugzilla? Thanks,

Josef

Hi Josef,

Mon, 2013-06-24 às 12:21 -0400, Josef Bacik escreveu:

I've added the bug at https://bugzilla.kernel.org/show_bug.cgi?id=60081

The problem it's on the receiving side, I can create the two files but then I can't "btrfs receive" the second file, I get the error that it can't find the directory. I've placed the two files I used for testing on the bug report, so you can try btrfs receive on them.

thanks,

Miguel Negrão
http://www.friendlyvirus.org/miguelnegrao